JP2013055990A - Pinball game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pinball game machine that detects opening/closing state of a front door and a body frame separately by an open/close detection means provided in the body frame.SOLUTION: A door open/close detection device 30 which detects opening motion of the body frame 2 relative to a machine frame 1 and opening motion of the front door 3 relative to the body frame 2 includes: a light transparent photosensor 36 disposed in the body frame 2; a pair of rotary levers 33 and 34 disposed movably to cross an optical path of the photosensor 36; and a torsion coil spring 35 to bias the rotary levers 33 and 34 toward the machine frame 1 and the front door 3 in opposite directions from each other. The rotary levers 33 and 34 are configured to cut off the optical path of the photosensor 36 depending on the presence of a slit 34f different numbers of times when one of the rotary levers 33 and 34 is moved according to the opening motion of the body frame 2 or the front door 3.

Description

  The present invention relates to a ball game machine in which a front door through which a game board can be seen is supported so as to be openable and closable with respect to the main body frame, and the main body frame is supported to be openable and closable with respect to the machine frame. In particular, the present invention relates to an improvement in open / close detection means that can detect the opening operation of the main body frame relative to the machine frame and the opening operation of the front door relative to the main body frame.

  A pachinko machine known as a representative example of a ball and ball machine is a rectangular machine frame (outer frame) installed on an island facility in the amusement hall, and a door mechanism that opens and closes to this machine frame via a hinge mechanism. The main body frame, a game board housed inside the main body frame, and a front door attached to the front surface of the main body frame via a separate hinge mechanism so as to be openable and closable. A transparent plate that allows the player to see the game board is attached to the opening formed at the center of the board. A liquid crystal display device, which is one of the electrical components, is attached to the back side of the main body frame, and a control processing device (control board) that controls the game as other electrical components, and a prize ball by a prize ball payout device A payout board that controls the payout of the game, a power supply board that supplies power to each part, an external terminal board that outputs various information about the pachinko machine such as the number of winning balls and the door open / closed state to the hall computer of the game hall, and the like are attached.

  In the pachinko machine schematically configured in this way, in order to prevent the player from performing unauthorized acts by opening the front door and the main body frame without permission, usually the detection switches on the back side and the front side of the main body frame respectively. Based on the output signals of these two detection switches, the open / close state of the main body frame relative to the machine frame and the open / close state of the front door relative to the main body frame are individually detected. However, since the open / closed states of the front door and the body frame must be detected using separate detection switches, the installation space for each of these detection switches increases, and each detection switch is electrically connected to the dispensing board and the control board. There is a problem in that the wiring harnesses to be connected are complicated and the cost is high and the reliability is lowered.

  Therefore, conventionally, a drive rod protruding from the back of the front door can be inserted into and exited from the through hole provided in the main body frame, and this drive rod switches the contact of the detection switch provided on the front side of the machine frame. Thus, a pachinko machine has been proposed in which the open / closed state of the front door and the open / closed state of the main body frame can be detected using a single detection switch (see, for example, Patent Document 1). Here, the detection switch is a normally closed contact type micro switch having a hinge lever, and when the drive rod presses the hinge lever, the detection switch is maintained in an off state, and the pressing of the hinge lever by the drive rod is released. The detection switch is switched from off to on.

  In a pachinko machine using such an open / close detection means, when both the front door and the main body frame are closed, the drive rod passes through the through hole of the main body frame and presses the hinge lever of the detection switch. Therefore, the detection switch is maintained in the off state. On the other hand, when the main body frame is opened relative to the machine frame, the front door rotates together with the main body frame, so that the drive rod is separated from the detection switch, so that the hinge lever is released and the detection switch is turned off. Switch from state to on state. In addition, when the front door is opened with respect to the closed main frame, the drive rod comes out of the through hole of the main frame as the front door rotates. Thus, the detection switch is switched from the off state to the on state. Therefore, the opening operation of the main body frame and the opening operation of the front door can be detected based on the ON signal output from the detection switch.

JP 2002-52144 A

  However, in the conventional pachinko machine disclosed in Patent Document 1, the detection switch is turned on in the same manner when the main body frame is opened with respect to the machine frame and when the front door is opened with respect to the main body frame. Therefore, there is a difficulty that it is impossible to distinguish which of the main body frame and the front door is opened. In addition, since the drive rod protruding from the back of the front door is inserted into the through hole of the main body frame to turn on / off the detection switch, the detection switch must be provided on the front side of the machine frame. In that case, it is necessary to route the wire harnesses connected to the detection switch to the payout board of the main body frame, the control board, etc. via the hinge part, and the routing route of the wire harnesses becomes extremely complicated. There was also.

  The present invention has been made in view of such a situation of the prior art, and its purpose is a bullet ball capable of individually detecting the open / closed state of the front door and the main body frame by the open / close detection means provided on the main body frame. It is to provide a gaming machine.

  In order to achieve the above object, the present invention provides a machine frame, a main body frame pivotally supported by the machine frame via a hinge mechanism so as to be opened and closed, and another hinge mechanism for the main body frame. A ball game machine comprising: a front door pivotally supported via an opening and closing; and an opening / closing detection means capable of detecting an opening operation of the main body frame with respect to the machine frame and an opening operation of the front door with respect to the main body frame The open / close detection means includes a light transmission type photosensor disposed on the main body frame, a pair of detection bodies movably disposed across the optical path of the photosensor, and both the detection bodies. And a spring member that urges the machine frame and the front door in opposite directions to each other, and when both the main body frame and the front door are in a closed state, It is held at a non-detection position outside the optical path of the sensor. When the main body frame is opened with respect to the machine frame, one of the two detection bodies moves from the non-detection position and blocks the optical path of the photosensor N times (N is a natural number). When the front door is opened with respect to the main body frame, either one of the two detection bodies moves from the non-detection position so as to block the optical path of the photosensor a number of times different from N. did.

  In the ball game machine configured in this way, when both the front door and the main body frame are closed, the pair of detection bodies are held at the non-detection positions that are out of the optical path of the photosensor. Outputs a signal indicating the door closed state. Then, when the main body frame is opened with respect to the machine frame, one detection body that has been in contact with the machine frame until then receives the biasing force of the spring member and moves from the non-detection position toward the photo sensor, Since the optical path of the photosensor is blocked N times (for example, once) during the movement of the detection body, a predetermined waveform signal indicating the open state of the main body frame is output from the photosensor. Further, when the front door is opened with respect to the main body frame, the other detection body that has been in contact with the front door so far receives the biasing force of the spring member and moves from the non-detection position toward the photo sensor, Since the optical path of the photosensor is blocked a number of times different from N (for example, twice) during the movement of the detection body, another waveform signal indicating the open state of the front door is output from the photosensor. Here, since the pair of detectors, spring members, and photosensors constituting the open / close detection means are all arranged centrally on the main body frame, the open / close detection means provided on the main body frame can be used to check the open / closed state of the front door and the main body frame. They can be detected individually, and the wiring harnesses connected to the photo sensor can be easily routed only on the main body frame side.

  In the above configuration, the two detection bodies may be a slide type that linearly crosses the optical path of the photosensor, but includes a base member with a support shaft standing upright, and both detection bodies are supported rotatably on the support shaft. It is preferable that a slit that allows the optical path of the photosensor to pass is formed in at least one of the two rotating levers. When a rotating type detector is used in this way, a pair of rotating levers with different planar shapes rotate around the support shaft of the base member, so that different outputs from the photosensor according to the presence or absence of slits or the number of slits Since a waveform is obtained, it can be easily determined which of the main body frame and the front door is opened based on these output waveforms. In addition, since the components of the opening / closing detection means can be incorporated into the base member and handled as one unit product, the assembly workability of the opening / closing detection means with respect to the main body frame can be remarkably improved.

  In this case, if the urging force of the spring member with respect to both rotation levers is made different in magnitude, and if an engagement protrusion capable of contacting the other rotation lever is formed on one of the rotation levers, for example, the body frame can be opened. When the front door is subsequently opened, the rotating lever that receives a large urging force can enter the optical path of the photo sensor while pushing away the other rotating lever. In addition to the opening operation, it can be detected that both the main body frame and the front door are opened.

  The bullet ball game machine of the present invention includes a light transmission type photosensor provided on the main body frame, and an open / close detection means capable of detecting the opening operation of the main body frame with respect to the machine frame and the opening operation of the front door with respect to the main body frame. And a pair of detectors movably disposed across the optical path of the photosensor, and a spring member that urges both detectors toward the machine frame and the front door in opposite directions, When one of the detection bodies moves in accordance with the opening operation of the main body frame or the front door, each detection body is configured to block the optical path of the photosensor a different number of times, so that the output waveform of one photosensor The open / closed states of the front door and the main body frame can be individually detected based on the above, and the wiring harnesses connected to the photosensor can be easily routed only on the main body frame side.

1 is a perspective view of a pachinko machine according to an embodiment of the present invention. It is a perspective view of the state which opened the front door of the pachinko machine shown in FIG. It is a perspective view of the state which opened both the front door and main body frame of the pachinko machine shown in FIG. It is a rear view of the pachinko machine shown in FIG. It is a perspective view of the door opening / closing detection apparatus with which the pachinko machine of FIG. 1 is equipped. It is a perspective view which shows the principal part of this door opening / closing detection apparatus. It is a reverse view of the 1st and 2nd rotation lever with which this door opening / closing detection apparatus is equipped. It is a disassembled perspective view of this door opening / closing detection apparatus. It is explanatory drawing of this door opening / closing detection apparatus in the state in which both the main body frame and the front door were closed. It is operation | movement explanatory drawing of this door opening / closing detection apparatus when a main body frame is open | released with respect to a machine frame. It is operation | movement explanatory drawing of this door opening / closing detection apparatus when a front door is open | released with respect to the main body frame. It is operation | movement explanatory drawing of this door opening / closing detection apparatus when both a main body frame and a front door are open | released. It is a timing chart which shows the output waveform of the photosensor with which this door opening and closing detection device is equipped.

  An embodiment of the invention will be described with reference to the drawings. As shown in FIG. 1, a pachinko machine (bullet ball game machine) P according to an embodiment of the present invention is installed in an island facility of a game hall. A rectangular machine casing 1, a main body frame 2 attached to the machine casing 1 in a door-like manner, and a front door 3 attached to the front surface of the main body frame 2 in a door-like manner. A transparent plate 4 made of glass or plastic is attached to the front door 3.

  As shown in FIGS. 2 and 3, an upper bearing body 5 and a lower bearing body (not shown) are fixed to the left frame portion of the machine frame 1, and the lower left corner below the lower bearing body. Is provided with a large speaker 6. On the other hand, first pins (not shown) are provided at both upper and lower ends of the left frame portion of the main body frame 2, and the main body is supported by supporting both the first pins on the upper bearing body 5 and the lower bearing body. A first hinge mechanism that supports the frame 2 so as to be openable and closable with respect to the machine frame 1 is configured.

  A game board 7 is accommodated inside the upper part of the main body frame 2, and the board surface (front surface) of the game board 7 is visible through the transparent plate 4. The game board 7 has a game area 9 defined by guide rails 8 and the like, and detailed explanation is omitted, but the game area 9 includes a variable display device, a start winning opening, a general winning opening, an attacker device, A game nail, a windmill, an outlet, etc. are provided. The main body frame 2 below the game board 7 is an installation part 2b that is covered with a front door 3, and a launching device 10 that launches a game ball toward the game area 9 in the lower center of the installation part 2b. Is arranged.

  The right side frame part of the main body frame 2 is a free end side opposite to the first hinge mechanism, and the right side frame part is provided with a locking device 11 having a cylinder lock 11a. Although not shown in the drawings, the locking device 11 includes a rear locking rod disposed on the back surface of the main body frame 2 and a front locking rod disposed on the front surface of the main body frame 2. The main body frame 2 is locked to the machine frame 1 by the rear locking bar and the front door 3 is locked to the main body frame 2 by the front locking bar. Then, when a key (not shown) is inserted into the key hole of the cylinder lock 11a and this key is rotated in one direction (for example, clockwise), the rear locking rod is moved upward and the main body frame 2 is unlocked. Yes. Further, when the key inserted into the key hole of the cylinder lock 11a is rotated in the other direction (counterclockwise), the front locking bar moves upward and the front door 3 is unlocked. Further, a door opening / closing detection device 30 to be described later is incorporated in the lower right corner on the free end side of the main body frame 2, and the door opening / closing detection device 30 allows the opening / closing state of the main body frame 2 to the machine frame 1 and the front door 3 to be opened. The open / closed state with respect to the main body frame 2 can be detected individually.

  Second pins (not shown) are provided at both upper and lower ends of the left frame portion of the front door 3, and both the second pins are pivotally supported on upper and lower support plates 2 a protruding from the left frame portion of the main body frame 2. Thus, a second hinge mechanism that supports the front door 3 so as to be openable and closable with respect to the main body frame 2 is configured.

  Returning to FIG. 1, the front door 3 has a large opening 3 a facing the board surface of the game board 7, and the opening 3 a is closed by the transparent plate 4. A relatively small speaker 12 is disposed on the left and right of the front upper portion of the front door 3, and the speaker 12 and the large speaker 6 described above generate various sound effects relating to the game. Yes. Further, at the lower front portion of the front door 3, the upper tray 13 for receiving game balls paid out from a prize ball dispensing device (described later) disposed on the back surface of the game board 7, and the upper tray 13 are discharged. A lower tray 14 for storing the game balls and a push button 15 that can be pressed by the player are provided, and an operation handle for adjusting the firing strength of the launching device 10 is provided on the right side of the upper tray 13. 16 is disposed.

  As shown in FIG. 4, on the back side of the pachinko machine P, there are a main control board 17 that performs main processing relating to the game, and various devices such as a variable display device and a speaker in response to a command from the main control board 17. Depending on the sub control board 18 to be controlled, the above-described prize ball payout device 19, the payout control board 20 that controls the prize ball payout device 19 in response to a command from the main control board 17, and the rotation amount of the operation handle 16. A firing control board 21 that controls the operation of the launching device 10 and an external terminal board 22 that outputs various information such as the number of jackpots to the hall computer of the game hall are provided.

  As shown in FIGS. 5 to 8, the door opening / closing detection device 30 includes a base member 32 having a support shaft 31 extending in the vertical direction, a first rotation lever 33 and a second rotation member supported rotatably on the support shaft 31. A rotation lever 34, a torsion coil spring (spring member) 35 that urges both the rotation levers 33 and 34 toward the machine frame 1 and the front door 3 in opposite directions, and rotation of the rotation levers 33 and 34. The rotating levers 33, 34, the torsion coil spring 35, and the photosensor 36 are incorporated in the base member 32 and configured as one unit component.

  The base member 32 is a box-like body having an open upper surface, and is attached to the lower right corner of the main body frame 2 using appropriate fixing means such as screwing. The support shaft 31 is erected substantially at the center of the inner bottom surface of the base member 32, and the photosensor 36 is attached to the short side wall of the base member 32. Further, notches 32a and 32b are formed on opposite long side walls of the base member 32. One of the notches 32a is exposed on the back side of the main body frame 2, and the other notch 32b is the main body frame 2. It is exposed on the front side.

  The first rotation lever 33 includes a cylindrical portion 33b having a shaft hole 33a, a first detection arm 33c protruding radially outward from the outer peripheral surface of the cylindrical portion 33b, and a reverse of the detection arm 33c from the outer peripheral surface of the cylindrical portion 33b. A first working blade piece 33d protruding in the direction is formed, and the working blade piece 33d has a first receiving portion 33e that hangs downward. The first detection arm 33c is formed in a simple shape without a slit, and as shown in FIG. 7, an engagement protrusion 33f is formed on the lower surface of the first detection arm 33c.

  The second rotation lever 34 includes a cylindrical portion 34b having a shaft hole 34a, a second detection arm 34c projecting radially outward from the outer peripheral surface of the cylindrical portion 34b, and a second detection arm 34c from the outer peripheral surface of the cylindrical portion 34b. And a second working blade piece 34d that protrudes in the opposite direction, and the second working blade piece 34d has a second receiving portion 34e that rises upward. The second detection arm 34c is formed in a bifurcated shape when seen in a plan view, and has a slit 34f at the tip thereof.

  The shaft hole 34a of the second rotation lever 34 and the shaft hole 33a of the first rotation lever 33 are sequentially inserted into the support shaft 31 with the torsion coil spring 35 interposed therebetween, and the upper end surface of the support shaft 31 is hooked. When the screw 37 is screwed in, both the rotation levers 33 and 34 are rotatably supported by the support shaft 31 in a state in which they are prevented from falling off. As a result, the first receiving portion 33e of the first rotating lever 33 protrudes outward from the one notch 32a of the base member 32, and the second receiving portion 34e of the second rotating lever 34 is the other of the base member 32. The first detection arm 33c and the second detection arm 34c can rotate in different planes around the support shaft 31 in the vertical direction.

  The torsion coil spring 35 includes a winding portion 35a wound around the cylindrical portions 33b and 34b, and a first arm portion 35b and a second arm portion 35c that protrude outward from both ends of the winding portion 35a. The first arm portion 35b is hooked on the first operating blade piece 33d of the first rotating lever 33, and the second arm portion 35c is hooked on the second operating blade piece 34d of the second rotating lever 34. ing. Here, the length of the first arm portion 35b is set to be considerably shorter than that of the second arm portion 35c, and accordingly, the bullets having different sizes from the torsion coil spring 35 to both the rotating levers 33 and 34 are set. Power is given. Specifically, the first rotation lever 33 receives a comparatively small elastic force from the first arm portion 35b on the short side and is urged to rotate in one direction (the direction of arrow A in FIG. 6). The lever 34 receives a large elastic force from the second arm portion 35c on the long side and is urged to rotate in the other direction (the direction of arrow B in FIG. 6).

  The photo sensor 36 is an optical sensor called a photo interrupter that detects the presence / absence of shielding of transmitted light, and the photo sensor 36 includes a light emitting element 38 and a light receiving element 39 that are opposed to each other in a vertical direction across a concave groove 36a. (See FIG. 8). The light emitting element 38 is made of, for example, an infrared light emitting diode, and the light emitting element 38 is a light emitting portion that is arranged on the ceiling surface of the concave groove 36a and emits infrared light downward. The light receiving element 39 is formed of, for example, a phototransistor, and the light receiving element 39 is a light receiving unit that is disposed on the inner bottom surface of the concave groove 36a and receives infrared light emitted from the light emitting element 38. The path of the infrared light emitted from the light emitting element 38 to the light emitting element 38 is the optical path of the photosensor 36. When the light receiving element 39 receives the infrared light from the light emitting element 38, the collector current proportional to the amount of received light. , And a low signal is output from the photosensor 36. On the other hand, when the optical path of the photosensor 36 is interrupted and the amount of light received by the light receiving element 39 becomes zero, the collector current stops flowing and a high signal is output from the photosensor 36. On the contrary, when the light receiving element 39 receives infrared light from the light emitting element 38, a high signal is output, and when the optical path from the light emitting element 38 to the light receiving element 39 is interrupted, a low signal is output. It is also possible to use the photosensor 36 of FIG.

  As shown in FIGS. 5 and 8, the photo sensor 36 is attached to the short side wall of the base member 32 with the concave groove 36 a facing the support shaft 31, and the first detection arm of the first rotation lever 33. 33 c and the second detection arm 34 c of the second rotation lever 34 can enter and leave the concave groove 36 a of the photosensor 36. Here, the first detection arm 33c and the second detection arm 34c have different tip shapes from each other, and when the detection arms 33c and 34c enter the concave groove 36a, the first detection arm 33c The optical path of the sensor 36 is blocked only once, and the second detection arm 34c blocks the optical path of the photosensor 36 twice. That is, when both the first detection arm 33c and the second detection arm 34c are in the non-detection position outside the optical path of the photosensor 36, the infrared light emitted from the light emitting element 38 is received by the light receiving element 39. As described above, a low signal is output from the photosensor 36. On the other hand, when the first detection arm 33c enters the concave groove 36a of the photosensor 36, the optical path from the light emitting element 38 to the light receiving element 39 is blocked by the first detection arm 33c. Output signal is switched from Low to High. Further, when the bifurcated second detection arm 34c having the slit 34f enters the concave groove 36a of the photosensor 36, the optical path from the light emitting element 38 to the light receiving element 39 is once interrupted by the second detection arm 34c. Since the light passes through the slit 34f and is blocked again, the output signal of the photosensor 36 is continuously switched to Low-High-Low-High. Therefore, based on the output waveform of the photosensor 36, it can be determined which of the first detection arm 33c and the second detection arm 34c has entered the concave groove 36a of the photosensor 36.

  As shown in FIG. 5, the door opening / closing detection device 30 configured in this way can be unitized by incorporating both rotary levers 33, 34, a torsion coil spring 35, a photosensor 36, and the like into the base member 32. The unit can be handled as one unit part at the time of parts management or transportation before being attached to the pachinko machine P. Moreover, since the rotary levers 33 and 34 are stably held at a constant opening angle in the state of such a unit product, the door opening / closing detection device 30 can be easily assembled to the main body frame 2. Hereinafter, the operation of the door opening / closing detection device 30 will be described mainly based on FIGS. 9 to 13.

  In the pachinko machine P according to the present embodiment, the main body frame 2 is normally closed with respect to the machine frame 1 and the front door 3 is closed with respect to the main body frame 2 in the normal state. As described above, the receiving portions 33e and 34e of the first rotation lever 33 and the second rotation lever 34 of the door opening / closing detection device 30 are in contact with the front surface of the machine frame 1 and the back surface of the front door 3, respectively, and the first detection arm 33c. Both of the second detection arms 34c are held at non-detection positions outside the optical path of the photosensor 36. In this case, since the infrared light emitted from the light emitting element 38 of the photosensor 36 is received by the light receiving element 39, a predetermined collector current flows through the light receiving element 39. Therefore, as shown in FIG. A predetermined waveform (continuous low signal) indicating that both the main body frame 2 and the front door 3 are closed is output from the photosensor 36.

  As shown in FIG. 10, when the main body frame 2 is opened with respect to the machine frame 1 while rotating around the first hinge mechanism, the first receiving portion 33 e is brought into contact with the front surface of the machine frame 1 until then. When the first rotating lever 33 that has been rotated rotates counterclockwise in the same figure by the biasing force of the torsion coil spring 35, the first operating blade piece 33 d comes into contact with one end of the notch 32 a of the base member 32. The one-turn lever 33 stops. When the first rotation lever 33 rotates by a predetermined angle from the non-detection position in this way, the first detection arm 33c enters the concave groove 36a of the photosensor 36, so that the infrared ray from the light emitting element 38 toward the light receiving element 39 is transmitted. The optical path of light is blocked by the first detection arm 33c. As a result, since the collector current does not flow to the light receiving element 39, as shown in FIG. 13B, a predetermined waveform (a signal changing from Low to High) indicating that the main body frame 2 is open from the photosensor 36. ) Is output.

  As shown in FIG. 11, when the front door 3 is opened with respect to the main body frame 2 while rotating around the second hinge mechanism, the second receiving portion 34e is hit against the back of the front door 3 until then. The second rotating lever 34 that has been in contact with the torsion coil spring 35 rotates in the clockwise direction in the drawing, and accordingly, the second detection arm 34c moves from the non-detection position toward the concave groove 36a of the photosensor 36. Rotate. At this time, the second detection arm 34c rotates on the lower surface side of the first detection arm 33c of the first rotation lever 33, but the second detection arm 34c is formed on the engagement protrusion 33f formed on the lower surface of the first detection arm 33c. At the time of contact, the second rotation lever 34 stops. When the second rotation lever 34 rotates by a predetermined angle from the non-detection position in this manner, the second detection arm 34c having the slit 34f enters the concave groove 36a of the photosensor 36. After the light path to reach is once blocked by the second detection arm 34c, it passes through the slit 34f and is blocked again. As a result, as shown in FIG. 13C, a predetermined waveform (a signal changing to Low-High-Low-High) indicating that the front door 3 is in the open state is output from the photosensor 36.

  In addition, as shown in FIG. 12, when the front door 3 is subsequently opened with respect to the main body frame 2 after the main body frame 2 is opened with respect to the machine frame 1, first, the first rotation lever When the first detection arm 33c of 33 enters the concave groove 36a of the photosensor 36, the optical path of infrared light from the light emitting element 38 to the light receiving element 39 is blocked by the first detection arm 33c. When the front door 3 is opened with respect to the main body frame 2 in this state, the second detection arm 34c contacts the engagement protrusion 33f of the first detection arm 33c stopped in the concave groove 36a of the photosensor 36. At this time, since the second rotating lever 34 receives a larger rotational biasing force from the torsion coil spring 35 than the first rotating lever 33, the second detecting arm 34c moves the first detecting arm 33c. The optical path of the photosensor 36 is traversed while being pushed away. As a result, the optical path that has been blocked by the first detection arm 33c once passes through the slit 34f, and then is blocked by the second detection arm 34c again. As shown in FIG. A predetermined waveform (a signal changing to Low-High-Low-High) indicating that both the frame 2 and the front door 3 are in an open state is output.

  Note that unillustrated wire harnesses are connected to the photosensor 36, and these wire harnesses are connected to the external terminal board 22 via the payout control board 20 and the main control board 17 on the back side of the main body frame 2. Thus, when various waveform signals as shown in FIGS. 13A to 13D are output from the photosensor 36, the main body frame 2 and the front door 3 are opened based on the output waveforms. This can be notified to the outside by an alarm sound from the speakers 6 and 12, and a door opening signal can be transmitted to the hall computer in the game hall.

  As described above, in the pachinko machine P according to this embodiment, the door opening / closing detection device 30 capable of detecting the opening operation of the main body frame 2 with respect to the machine frame 1 and the opening operation of the front door 3 with respect to the main body frame 2 is the main body. The door opening / closing detection device 30 installed in the frame 2 includes a light transmission type photosensor 36 disposed in the main body frame 2 and a pair of movably disposed so as to cross the optical path of the photosensor 36. The main body includes rotating levers (detectors) 33 and 34, and a torsion coil spring (spring member) 35 that urges both the rotating levers 33 and 34 toward the machine frame 1 and the front door 3 in opposite directions. When one of the rotary levers 33, 34 is moved in accordance with the opening operation of the frame 2 or the front door 3, each rotary lever 33, 34 is configured to block the optical path of the photosensor 36 by a different number of times. Sitting Based on the output waveform of one photosensor 36, the open / closed state of the main body frame 2 and the front door 3 can be individually detected, and the wiring harness connected to the photosensor 36 is routed only on the main body frame 2 side. Easy to do.

  In addition, a base member 32 having a support shaft 31 standing thereon is provided, and rotating levers 33 and 34 rotatably supported by the support shaft 31 are used as detection bodies, and one of these rotation levers 33 and 34 has a photo. Since the slit 34f that passes through the optical path of the sensor 36 is formed, the pair of rotary levers 33 and 34 having different planar shapes rotate around the support shaft 31 of the base member 32, so that the photosensor according to the presence or absence of the slit 34f. Different output waveforms are obtained from 36, and it can be easily determined which of the main body frame 2 and the front door 3 is opened based on these output waveforms. In addition, since the components of the door opening / closing detection device 30 can be incorporated into the base member 32 and handled as one unit product, the assembly workability of the door opening / closing detection device 30 with respect to the main body frame 2 can be significantly improved.

  Further, the biasing force of the torsion coil spring 35 with respect to both the rotation levers 33 and 34 is made different in magnitude, and an engagement protrusion 33f capable of contacting the other rotation lever 34 is formed on one rotation lever 33, and the main body When the front door 3 is opened following the opening operation of the frame 2, the rotating lever 34 that rotates by receiving a large biasing force enters the optical path of the photo sensor 36 while pushing the other rotating lever 33 away. Therefore, not only the opening operation of either the main body frame 2 or the front door 3 but also the opening of both the main body frame 2 and the front door 3 can be detected.

  In the above embodiment, the case where the door opening / closing detection device 30 is attached to the lower right corner of the main body frame 2 has been described. However, the door opening / closing detection device 30 can be installed anywhere on the free end side of the main body frame 2. For example, the door opening / closing detection device 30 may be attached to the upper right corner of the main body frame 2.

  In the above embodiment, the pachinko machine P in which the integrated front door 3 provided with the transparent plate 4 and the operation handle 16 is pivotally supported on the main body frame 2 so as to be openable and closable has been described. The present invention can also be applied to a separate type front door composed of an upper door and a lower door provided with an operation handle. In this case, the lower door cannot be opened unless the upper door is opened. In this case, the open / closed state of the upper door with respect to the main body frame 2 can be detected using the door open / close detection device 30 by bringing one rotary lever 34 into contact with the back surface of the upper door.

  Further, in the above embodiment, the urging force of the torsion coil spring 35 with respect to both the rotating levers 33 and 34 is made different in magnitude, and the one rotating lever 34 that rotates by receiving the large urging force is brought into contact with the engaging projection 33f. Since it is made to rotate together with the other rotation lever 33, it is possible to detect not only the opening operation of either the main body frame 2 or the front door 3, but also the opening of both the main body frame 2 and the front door 3. However, the engaging protrusion 33f may be omitted, and the two rotating levers 33 and 34 may rotate independently with the same urging force. In this case, when the main body frame 2 and the front door 3 are continuously opened, only the opened state of the first operated frame can be detected, but the output waveform of one photosensor 36 is the same as in the above embodiment. Based on the above, it is possible to individually detect the open / closed state of the main body frame 2 and the front door 3.

  Further, in the above embodiment, as a means for differentiating the rotational urging forces of the rotary levers 33 and 34, the length dimensions of the pair of arm portions 35b and 35c protruding from the winding portion 35a of the torsion coil spring 35 are different. These arm portions 35b and 35c are respectively engaged with the corresponding rotation levers 33 and 34, but the rotation levers 33 and 34 are individually attached using two types of torsion coil springs having different spring constants. You may make it rush.

  In the above embodiment, the optical path of the photosensor 36 is interrupted once by the rotation of one rotary lever 33 having no slit, and the optical path of the photosensor 36 is rotated by the rotation of the other rotary lever 34 having one slit 34f. However, the number of times the optical path of the photosensor 36 is blocked by the rotary levers 33 and 34 is not limited to this. For example, by forming one slit on one rotary lever and forming two slits on the other rotary lever, the optical path of the photosensor is blocked twice by the rotation of one rotary lever, and the other rotary lever The optical path of the photosensor can be cut off three times by the rotation of the rotation of the photosensor. In short, one rotation lever blocks the optical path of the photosensor N times (N is a natural number) and the other rotation It suffices if the lever blocks the optical path of the photosensor a number of times different from N.

DESCRIPTION OF SYMBOLS 1 Machine frame 2 Main body frame 3 Front door 7 Game board 11 Locking device 17 Main control board 18 Sub control board 22 External terminal board 30 Door opening / closing detection apparatus 31 Support shaft 32 Base member 32a, 32b Notch 33 1st rotation lever (detection) body)
33a Shaft hole 33b Cylindrical part 33c 1st detection arm 33d 1st action | operation blade piece 33e 1st receiving part 33f Engagement protrusion 34 2nd rotation lever (detection body)
34a Shaft hole 34b Cylindrical portion 34c Second detection arm 34d Second operating blade piece 34e Second receiving portion 34f Slit 35 Torsion coil spring (spring member)
35a Winding part 35b First arm part 35c Second arm part 36 Photo sensor 36a Concave groove 38 Light emitting element 39 Light receiving element P Pachinko machine (ball game machine)

Claims (3)

A machine frame, a main body frame pivotally supported by the machine frame through a hinge mechanism, and a front door pivotally supported by the main frame through another hinge mechanism; In a ball game machine comprising an opening / closing detection means capable of detecting an opening operation of the main body frame with respect to the machine frame and an opening operation of the front door with respect to the main body frame,
The open / close detection means includes a light transmission type photosensor disposed in the main body frame, a pair of detection bodies movably disposed across the optical path of the photosensor, and both the detection bodies. A spring member that biases the machine frame and the front doors in opposite directions,
When both the main body frame and the front door are in a closed state, the two detection bodies are held at a non-detection position that is out of the optical path of the photosensor, and the main body frame opens with respect to the machine frame. When this is done, either one of the two detection bodies moves from the non-detection position to block the optical path of the photosensor N times (N is a natural number), and the front door is open to the main body frame. When operated, either one of the two detection bodies moves from the non-detection position to block the optical path of the photosensor a number of times different from N.   2. The rotary lever according to claim 1, further comprising a base member on which a support shaft is erected, and wherein both the detection bodies are rotatably supported by the support shaft, and the photo is mounted on at least one of the both rotation levers. A bullet ball game machine characterized in that a slit is formed to pass through the optical path of the sensor.   3. The method according to claim 2, wherein the biasing force of the spring member with respect to the two rotation levers is made different in magnitude, and an engagement protrusion capable of coming into contact with the other rotation lever is formed on one of the rotation levers. A ball game machine characterized by